Merge pull request #268 from ZHKO1/patch-1

fix example-4 in transitions.md

Author: dingyiming

src/v2/guide/transitions.md

@@ -503,6 +503,7 @@ new Vue({
   methods: {
     beforeEnter: function (el) {
       el.style.opacity = 0
+      el.style.transformOrigin = 'left'
     },
     enter: function (el, done) {
       Velocity(el, { opacity: 1, fontSize: '1.4em' }, { duration: 300 })